There are currently many categories of vaccinations available in China, and some even have the same name. So, what is the difference between diphtheria and tetanus? The composition is different Diphtheria vaccine: it is made of a mixture of diphtheria toxoid and tetanus toxoid. Pertussis vaccine: made up of pertussis vaccine, refined diphtheria and tetanus toxoid in appropriate proportions. The timing of vaccination is different for the diphtheria vaccine: for children over six years of age. Pertussis vaccine: administered when the child is 3, 4, 5 months old and 18 months old. Different effects Tetanus vaccine: It is composed of two kinds of vaccines: diphtheria and tetanus, which mainly prevent diphtheria bacillus and tetanus bacillus infection. Pertussis vaccine: The diphtheria vaccine is added to the diphtheria and tetanus vaccines, and also has the effect of preventing whooping cough. Despite the above differences between diphtheria and pertussis vaccines, the contraindications, precautions and common adverse reactions do not differ much, as follows: 1. People suffering from central nervous system diseases, such as encephalopathy, epilepsy, etc. or with a past medical history, as well as those who belong to the allergic group cannot be vaccinated; fever, acute diseases and the acute attack period of chronic diseases should be slowed down. 2. After returning home from the vaccination, let the child rest fully and make sure to drink more water. 3.If fever occurs and the body temperature is less than 38.5℃, you should drink more water and just carry out physical cooling. If it is greater than 38.5℃, you need to take antipyretic medicine for treatment. 4.Common adverse reactions may include fever, irritability, drowsiness, vomiting, etc. 5. Generally, a rash may appear a few hours or days after vaccination, with various forms and common urticaria, which may be generalized or limited, and may be accompanied by fever and general discomfort when the rash appears. 6.After vaccination, there may be hard knots at the vaccination site, which can be absorbed gradually with hot compresses and observed to subside, and generally return to normal in about one month.